Question

PLS HELP ME

What is the mean absolute deviation of the data 10, 17, 20, 12, and 16? Round to the nearest whole number

Answer 1

The answer is 4

`s = \sqrt{(\Sigma^n_i_=_1(x_i-x)^2)/(n-1) }`

Turn the equation into a simpler form

`s = \sqrt{(SS)/(n-1) }`

`s = \sqrt{(64)/(5-1) }`

`s = \sqrt{(64)/(4) }`

`s = √(16)`

That said, we know the square root of 16 is 4, so 4 would be your answer.

`s = 4`

Answer 2

3.5

Explanation:

where n is the number of observed values, x-bar is the mean of the observed values and xi are the individual values.